Just like the Bin Laden thing didn't happen. Laden died of kidney failure in 2001, and I don't think there ever was a real person called Abu Bakr al-Baghdadi. Me thinks he was a fictional character invented for political ends.
I could be wrong, but maybe I'm right. After all, how many times was he killed already? How many times did he get better? Can't keep a good theoretical terrorist down, huh?